How set a Static IP on Ubuntu

1. Switch to root
     $sudo su
    password for root:

   #sudo nano /etc/network/interfaces

   from the nano editor you can see

   

     modify to

          auto lo eth0

          iface eth0 inet static

          address 10.10.10.10

          netmask 255.0.0.0

          gateway 10.10.10.11

   press Ctrl+X to save the setting. Yes to conform. 

   for DNS config 

       

              #sudo nano /etc/resolv.conf

                   nameserver (dns)

                   nameserver (alternate dns)

      save the setting. finnaly

    #sudo /etc/init.d/networking restart